yamt commented on pull request #4080: URL: https://github.com/apache/incubator-nuttx/pull/4080#issuecomment-876807245
> > do you mean where to put the semaphore or an equivalent of it? > > what's wrong with eg. conn->snd_buf_sem? > > psock_send_eventhandler can wake it up when some buffers are acked by the peer. > > not just psock_send_eventhandler(). I think semaphore put should be done wherever wrbuffer is released. as far as i understand, the data in the send buffer is disposed only when * acked by the peer (psock_send_eventhandler) * connection is closed > > ``` > net/tcp/tcp_send_buffered.c:214: tcp_wrbuffer_release((FAR struct tcp_wrbuffer_s *)entry); > net/tcp/tcp_send_buffered.c:220: tcp_wrbuffer_release((FAR struct tcp_wrbuffer_s *)entry); > net/tcp/tcp_send_buffered.c:434: tcp_wrbuffer_release(wrb); > net/tcp/tcp_send_buffered.c:607: tcp_wrbuffer_release(wrb); > net/tcp/tcp_send_buffered.c:672: tcp_wrbuffer_release(wrb); > net/tcp/tcp_send_buffered.c:1246: tcp_wrbuffer_release(wrb); > net/tcp/tcp_conn.c:741: tcp_wrbuffer_release(wrbuffer); > net/tcp/tcp_conn.c:747: tcp_wrbuffer_release(wrbuffer); > net/tcp/tcp_wrbuffer.c:157: tcp_wrbuffer_release(wrb); > net/tcp/tcp_wrbuffer.c:213: tcp_wrbuffer_release(wrb); > ``` > > > maybe it works for the majority of cases, yes. > > i suspect it can be a problem for a small sndbuf though. > > This issue is inherent in the configuration of small buffers, SO_SNDBUF is just a suggestion value, How about keeping the current behavior? i'm not sure what you mean here. can you explain a bit? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@nuttx.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
